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DRAFT [TENTATIVE] WASTE DISCHARGE REQUIREMENTS ORDER R5-2023-00XX 96 <br />FORWARD, INC. <br />FORWARD LANDFILL <br />SAN JOAQUIN COUNTY <br />STANDARD PROVISIONS & REPORTING REQUIREMENTS <br />zone affected by the release [Title 27, § 20420(k)(5) and <br />§ 20425(b)]. For releases from MSW landfill units, the Evaluation <br />Monitoring Program shall also include any additional proposals <br />necessary to comply with 40 C.F.R. § 258.55, particularly the <br />additional monitoring well required by 40 C.F.R. § 258.55(g)(1)(ii). <br />d.Within 180 days of confirming measurably significant evidence of a <br />release, the Discharger shall submit to the Central Valley Water <br />Board an initial engineering feasibility study for a Corrective Action <br />Program necessary to meet the requirements of Title 27, section <br />20430. At a minimum, the initial engineering feasibility study shall <br />contain a detailed description of the corrective action measures that <br />could be taken to achieve background concentrations for all <br />constituents of concern [Title 27, § 20420(k)(6)]. <br />e.If the Discharger confirms that there is measurably significant <br />evidence of a release from the waste management unit at any <br />monitoring point, the Discharger may attempt to demonstrate that a <br />source other than the waste management unit caused the evidence <br />of a release or that the evidence is an artifact caused by an error in <br />sampling, analysis, or statistical evaluation or by natural variation in <br />groundwater, surface water, or the unsaturated zone. The <br />Discharger may make a demonstration pursuant to Title 27, section <br />20420(k)(7) in addition to or in lieu of submitting both an amended <br />report of waste discharge or an engineering feasibility study; <br />however, the Discharger is not relieved of the requirements and <br />due dates of Title 27, sections 20420(k)(6) & (7) unless Central <br />Valley Water Board staff agree that the demonstration successfully <br />shows that a source other than the waste management unit caused <br />the evidence of a release or that the evidence resulted from error in <br />sampling, analysis, or statistical evaluation or from natural variation <br />in groundwater, surface water, or the unsaturated zone. In order to <br />make this demonstration, the Discharger shall notify the Central <br />Valley Water Board by certified mail of the intent to make the <br />demonstration within seven days of determining measurably <br />significant evidence of a release, and shall submit a report <br />within 90 days of determining measurably significant evidence of a <br />release [Title 27, § 20420(k)(7)]. <br />f.Within 90 days of the date that the Evaluation Monitoring Program <br />from paragraph J.1.c is approved (the date is it established), the <br />Discharger shall complete and submit the following: